researchers say everyone should use caution when crossing the street while using a cell phone, but older adults should be especially careful. everybody should be careful. >> i was in the mall the other day and you ever notice or in an airport, every other person has -- is either looking down or has that thing hermetically sealed to the ear. >> a person texting or something and she fell into a fountain? >> i didn't see that. >> be careful. >>> it is 4:57. efforts to prevent a nuclear meltdown hits a big roadblock. we have a live report coming up from tokyo straight ahead. >>> and a big tsunami in the bay area. why experts say it could happen and where it could hit. >> and a police chase, stolen sign and witches, how they are all tied to a bay area hate crime investigation. ,,,, never in my lifetime did i think i could walk 60 miles in 3 days. 60 miles in 3 days-- i can do that. 60 miles compared to what a cancer patient goes through is a walk in the park. from the moment i registered, people started immediately supporting me. we had an outpouring of-- of support. i wanted to do something